First, look up your address on Etherscan in order to find the transaction in which you placed your bid.

That, when you click on the TX hash, has "Function: newBid(bytes32 sealedBid)" under "Input Data"

Once you find this, copy and paste the value in the "Input Data" into a text document & remove the "MethodId:" and "[0]:" so that it looks like this: 0xce92dced69faf18dd0953d9124d7917234b0efc05c78fd0d9abfc6ffb32d512680fdbb65.

Scroll to the "ENS" section, depending on what you saved, enter the following:

The address you bid from

ENS Name you Bid On (no '.eth' at the end!), or the namehash from your long string under "Hashed ENS Name (Label Hash)"

The amount you think you bid

Your Secret, or the sha3 secret from your long string under "Your Secret (Hashed)"

When you do this, the following four fields will populate with long data. You want compare the string you copied earlier (0xce92dced69faf18dd0953d9124d7917234b0efc05c78fd0d9abfc6ffb32d512680fdbb65) to the string shown under "New Bid Data".

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